Consider the bearing wear data and multiple linear regression problem in Exercises 6-17 and 6-23. (a) Fit
Question:
Consider the bearing wear data and multiple linear regression problem in Exercises 6-17 and 6-23.
(a) Fit second-order polynomial models.
(b) Check for multicolliearity in the data for each of the polynomial models. Comment on your results.
(c) Test the contribution of the second-order terms in the models when compared to the reduced first-order model.
Comment on your results.
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Related Book For 
Engineering Statistics
ISBN: 9780471388791
2nd Edition
Authors: Douglas C. Montgomery, George C. Runger, Norma F. Hubele
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